Steam-generator.



' of a secondary secondary generator may accunnilate therein.

'rnonas r. SCOLLARD,

OF WARSAW, INDIANA.

STEAM GENERATOR,

Specifihation of Letters Patent.

Patented May 28, 1907.

,. Application filed September 18,1906. Serial No. 335,091.

Be it known that I, Tnones FJSCQLLARD, acitizen of the United States, residing at Warsaw, in the county oi Kosciusko and State of Indiana, have invented a new and useful Steam-Generator, of which the follow- 'ing is a specification.

This invention hasrelation to steam genei ators, and it consists in the novel construction and arrangement of parts as hereinafter shown, and described.

The object of the invent on is to provide a steam generator which is located in the fire be): of a steam boiler furnace, and is of such construction as not to interfere with the heating oi? the primary steam generator. The present invention is therefore in the nature steam generator which, together with the primary generator, is heated by a single ii're. -The primary generator is of usual construction, while the secondary generator is of special construction. The said secondary generator consists, primarily, of a series of backs or sides which are located adjacent the side and end walls of the fire box. One of the said backs extends higher than the other'bacl; and constitutes a steam I dome from which steam is taken off and led into a steam turbine. The shaft of the turbine'jis connected with the shaft of an elecgenerator in tum is electrically connected with storage batteries, and said batteries in turn. are connected with the light fixtures. A means provided for automatically maintaining the water in the at-a uniform level, and

means is also provided for flushing the said secondary generator for the purpose oi re noving sediment and such solid matter The backs oi" the secondary generator, which are located at opposite sides of the firebox, are connected together by means of transversely extending pipes, the surfaces of which, in. addition to the inner exposed surfaces oi the said backs, present suflicient area to the fire for the purpose of absorbing heat units therefrom. a In the accompanying drawing, F igure 1 is a diagrannnatic view with; p s in section, illus rating a system in whic i. the secondary steam generator employed. F 2 a perspective view oi the steam generator detached.

The primary. steam generator 1 is supported by the furnace walls 2. The grate 3 is located below the generator 1, and .the

.space between the said grate and the generator 1 constitutes the ire box. The water i backs 4, 5 and 6 are arranged within the fire l box, the back4 being located against one of l the furnacewalls 2; the back 6 against the opposite furnace wall, and the back 5 against the back wall of the fire box. The back. 5 cimnects the backs 4 and 6 together. The back 6 is of greater dimensions vertically than the hacks 4 and 5, and the space within the upper portion of the back 6 constitutes a l steam dome. The pipes '7 extend transl versely across the fire box and are attached l at their ends to the side of the back 6 and the top oi? the back i. The water supply pipe 8 l is connected with the back 4, said pipe 8 be- I in; provided with a trap 9 which contains a taining the water within the secondary generator at a uniform level. higher and 5 and the pi e 7 but is at a lower level than the top of t 0 back 6. The bottoms of the backs 4 and 6 are provided with the valved pipe 10, the lower ends of which are connected with the transversely extending pipe 11 which ispreferably located in the ash pit. Thesaid pipe 11 is connected with the drain pipe 12; T he steam pipe 13 connects with the dome of the back 6 and is provided with a safety valve 14. The steam turbine 15 is suitably located and the steam pipe 13 connects with the steam inletport of the said turbine 15. The shaft 16 oi the turbine 15 is connected with the shaft oi: the electric generator 17. The said generator 17 in turn is electrically connected with the storage batteries 18 and the said batteries are electrically connected with the current wires of the light line 19. i

From the foregoing description, it-is obvious that as the steam is generated in the secondary generator, it is carried oii through the steam pipe 13 to the turbine 15 and operates the same, and. that the said turbine in Such level is at a I l l l l l,

plies electric current to the storage batteries 18. The said batteries 18 may be used for feeding the current to the light line 19. if, at any time the steam. pressure in the secondary generat r or steam pipe 13 should become abnor nai, the excess of pressure is reduced by the safety valve 14 which is oper ated in the usual manner by such excess pressure to permit some of the steam to escape. It will also be observed that the i l l x float operated valve for the purpose of main- '1 altitude than the tops of thebaclts 4] turn operates the generator 17 which supwater level within the S-P34 Eulw=- is maintained at a uniform love the parts of the said second generator so arranged as to not interfere with the heating of the primary generator. Also the surface of the secondary generator is sullicient to absorb the necessary amount of heat units from the fire for the purpose of gcncratmg the steam.

When it is desired to relieve the secondary generator of sediment and foreign. matter, the

Valves in the nip 10, '10 are opened and the 5 water is permitted to flow in th rough the pipe 8 and thus the-sediment is ewe-o! down through the ipes 10, 10, pipe ih and out through the rain pipe 12. It is, of course, understood that theflushing occurs at such time when the SlDGBJH'lS not being generated in the said secondary generator.

The steam pipe 20 connects the steam dome of the generator 1 with the steam of the secondary generator. Said pipe is provided with the valve 21. The pipe 22 connects with the generator 1 below the water level thereof and also connects with the secondar I .generatorat a point below its waterlevei.

'l-he said pipe 22 is provided with a Valve 23.

The pipes 20'and 22 are for the pu'rpose 'of leading water andstealn from the primary to the secondary generator, the latter of which is connected with the turbine15.- V E Having '(lQSC-Ilbtld my invention, What I claim and desire to secure by Letters Patent 1. In combination with a primary steam generator mounted u 301 a furnace, a secondary steam generator located in the tire box ofthe furnace and comprising water backs ar the . Miami the s l .2 the i'urnucconeoi 'mn-lis haw steam pine connected supply i no with. a water nnecting with the svcondnly steam genera and means. for nisintuiniin; tie Water in the se omlary steam generator at a uniform level. i

o. in combination with a primary steam gen ator mounted upon a furnace. a second ary mi n icrator con vrising cider lan lin. ,nrrn d against the will is of the tire bod cl backs one of which provided wit h. a steam dome having a steam pipe connected therw with, transversely extending pi we connecting opposite water backs together, a water supply pipe connected with said water backs, and means for maintaining the weterwithin secondary steam generator at a uniform level. v

In testimony that I claim the foregoing as my own, I have hereto ailixcd my signature in the presence of two witnesses.

THOMAS F. SCQlLlQ/ilil).

' Witnesses:

Jons (l. GRAVES, W. E. Srnoun.

on dome and a o 

